Pipe coupling



Fi ure l a Patented Sept. 21 1948 E STATES Anthony La iticciaz, Cleveland Heights, and

Thomas W. Plante, oievtlana Ohio Application sep te n iher 18, 1945, eril No; 611002 Our invention relates to pipe "couplings aiid is here hown and described as employed in arrangement that is particularly suitable in the operation of lancing or the burning open of the tap holes or pouring notches of melting furii c's'.

It will be understood, however, that thi'rii/ention The usual practice is to force oxygen through a flexible hose into a metal pipe that may be either bent or straight and which functions as a burner nozzle. These burner-pipes may be of Various diameters but are usually about one inch or smaller. end of the pipe and the fiarnedire'cted against the material or object to'be burned, the fuel gas;- being constantly supplied through the hose and site. Owing to the intense heat, a considerable 1361,-

The gas isighited at the discharge tion of the burning-pipe is consumed dui'lfig'tH operation and the unconsumed shorter portion thereof becomes hot so that often one or more changes of burner-pipes must be made during a lancing operatiori. By pi evi'ous practices, such change required considerable time and frequently tools were needed, the usual replacement were; tion requiring the unscrewing of the partlybufried pipe from the coupling and the screwing of a new section into place. i'

One object of our invention is taprovidee ecu pling arrangementof such form that a pipe may be more quickly and tightly connected toanother pipe than by various means heretofore known in theart. t Another object of our invention is to provide means for quickly removing a hot burner-pipe out i of coupled engagement with a meisu piyime and to substitute a new burning pipe, without the necessity of using tools, such as wrenches oi the like. 1 j

In the accompanying drawings which illustrate a preferred embodiment of our invention:

Figure I is a side View oIlthe coupling apparatus', partly in section; t

Figure 2 is a View taken ont e line II--II of Figure 1;

Figure 3' is a longitudinal sectionalvfwthrou'gh one of the housing and, coupling members of Figure 1; t t 1 Figure l is a side View, partly in section, oian: other coupling element and'housing member of Figure 1;

Figure 5 is' avi'ew taken on the line? Figure 6 1st s'iiieiiiew of one tithe gripping ittw's'or Figuf Land 1 p a a Figure Tie a maxi view thereof, The "ipe which funeti'ons' as' a A ate wine theruneusmy um; 13' indictted at e. A gas hose nipple'pf conventional form is shown at m; partly n levationjaiid partly in see itn. This nipple in has threaded engageme t withia nozzle n that tapers samewhet arts with which the inn r end or the bur ings; e wa snug fit, these elements a and lfbeing aettei msiy tie-1e in such snug fitting engagement bj tli apparatus hereinafteidescribedi r i y The" n zl e H has three-tied cdririegtion with a housing and touches member. The ihefiiber lz'is threaded at its upset end as at 12a" eooperate with threa s lstji of" a second must and coupling mem er s. A eat-r or gr pping aws; M are positioned in lots in the Ifierfibr lg aiid ere pivotally' mounted between perforated ears I 5 that are forr'iiedon the ndtisi'iigxhehi-ber ii; the

inner fac'es of tl'iese jaws being serrated tofifiiili' grip thepifi @when they are forced into enetigemerit therwith. l p

Thehous'ing is has an tastier iiiiiried setumer' Surface-16in p tti t to engage an i-11 cuntdsurfttte n each ofth jaws Hi,- we r't a camming action that moves the jaws" iga-i-nst the pipe 8 when the member i3 is turned in one dire'c-tionfrelatite to the member 12; is are driveninto hol'esflor sbckets I9 is the master I3 and serve tenancies-fer shenefii 'e Whenthe ttusiiiigmem er Itis withclr"-"h or sdmwiiet' ttmtteepatient-witness; tothe member my inting tne j't-wt 14; to swing outwtrdiy' 0' their pivots, the case; 8 ent ce with drawn and as new site srt'd; the p te being pushed s migiyttg st trief izl-fl. 1p the coupling member" i 3 wi tie matters turrettion to more itoutw'afd lyoiithe member i2", thus bring-mg the" iiiclind s'lirfaees' l6 and IT into? ewgagenierit with one steamer and-dausirigthejaws H tobe forced into cribbing enticement with the pipe. A reverse" operatidnj of the member t3, of courseyperniits remdvn or the pipe 8;

i-teoupling; .comprisine it met adapted for 1 tthnt'ttioa at its ;1'eairend we fluid-supply pi e turner is shown face of said second pipe, and means movable ax- V ially on said coupling member to force the gripping elements into tight engagement with said second 3 pipe.

2. A coupling comprising a nozzle adapted for 4 ment with said second pipe, the gripping elements being located in diametrally-opposed relation. 6,;Acoupling comprising a nozzle adapted for a normally fixed connection at its rear end to a fluid-supply ,pipe and for detachable seating engagement at its front end with a second pipe, a

a normally fixed connection at its rear end to a fluid-supply pipe and. for detachable seating engagement at its front end with a second .pipa a.

first coupling member connected at its inner end to the nozzle at a rearwardly-located point therethe gripping elements intotight engagement with ds d i 7 .7 t

3. A coupling comprisinga nozzle adapt-edfor a normally fixed connection at its rear endto a fluid-supply pipe andfor detachable seating engagement at its'front' end with a second. pipe, a coupling member connected at its inner end to the nozzle at a E-rearwar-dly-lo-cated point thereon, gripping elements pivoted to said "coupling memberand movable r-adially thereof into position to engage the outer surface ofsaidsecond pipe, and means movableaxially onsaid coupling member to forcethe gripping elements intot'ightengagement with said second pipe, the seating surface on one of-the detachably engaged members being taper-ed in an axial direction and havingteles-copic fit with; the seating surface on the other .m m 1 Q.

- 4 A coupling for fluid-supply lines, comprising a nozzle adapted for connection at'itsinner end to a fluid-supplypipe and tapering toward its outer endfor snug telescopic engagement with a sec; ,ond pipe,.atubularhousing member connected to h nne -en emic PQ ands rme dm the tapered portion; ofthe nozzle; in radially-spaced relation thereto, gripping jaws pivotallymounted il qh msmb rl nrmoveme t tow the v ax thereof and havingcamming surfaces pro;- ms ine ke d ,ther e e of t e member, a second housingmember of tubular form, having threaded engagement with the outer end of the first-named housing, member and having a cammingsurface engageable with the'gcamming surfaces of the 'jaws,rall of thecammingjsurfaces,being so arranged that theljaws are forced inward into gripping engagement the. second pipe whenflthe second housing member is rotated in one direction relative, to the, first-named housing member. p A coupling compri' g a nozzle adapted for a'gnormallyi fixedlconnection at 'fits rear end to a fluid-supply pipe and for detachable seating en 'gagement at it's front end with a second pipe, a coupling member connecte'dat'it's inner end to the nozzle at a rearwardly-located point thereon, rippingyelements pivoted to said coupling member andmOVable radially thereof into position to engage the outer surface of a; second pipethathas seating engagement with the said: nozzle, and means movable axially on said "couplingmember toforce the grippingelements into tight engage H coupling member connected at its inner end to the "nozzle at a rearwardly-located point thereon, gripping elements pivoted to said coupling member and movable radially thereof into position to engage the outer surface .of a second pipe that has seating engagement with said nozzle, and

5 means movable axially on said coupling member to force the gripping elements into tight engagement with said second pipe, the gripping elements being locatedin diame-trally-opposed relation and each being in the form of a finger pivotally supported at one end on said coupling member and having a camming surface adjacent to its other end, engageable by said axially movable means.

71A coupling comprising a nozzle adapted for a normally fixed connection at its rear end to a fluid-supply pipe and for detachable seating engagemen-t at its front end with a second pipe, a coupling member connected at its inner end to the nozzle at a rearwardly-located ipoint thereon, gripping elements carried by said coupling member and movable radially thereof into position to engage the outer surface of a second pipe that has seating engagement with said nozzle, and,

means movable axially on saidcoupling member to forcethe gripping elements into tight engagement with said second pipe, the gripping elements being located in .diametrally-opposed rela'tionand each being in the form of a finger extending generally parallel to the axis of said coupling. memher, and pivotally supported at one end on-the coupling member and having a camming surface adjacent to its other end, engageable' by said movable means. i

, 18. A coupling comprising a nozzle adaptedfor a'normally fixed connection at its rear end to a fluid-supply pipe and for detachable seating engag-ementiat. its front end with .a secondpipe, a coupling member connected at its inner end to the nozzle'at a rearwardly-located point thereon, grippingelements pivoted to the coupling member and movableradially thereof into position to engage the outer surface of a second pipe that has seating engagement with said nozzle, and means movable axially on said coupling member 'tofl force. the gripping elements into tight engagement with said second pipe, the gripping'elements being located in diametrally-opposed relation and each being in the form of a finger extendin generally parallel to the axis of the coupling member and projecting beyond the outer end thereof, and being pivotallysupported at its inner end on thecoupling memben'and' having a camming surface nearits outer end, engageable by said axially movable means. ,f 1 i r ANTHONY LA R ocIA.

THOMAS W. P A TE;

'REFERENCESCITED I 1 7 The following references are of recordin the fileiof this patent:

UNITED STATES PATENTS i mber? m lle s] 910,416 Reed Jan,'19,'1909 1,012,121 Beauchesne Dec'. 19,j1911 1,586,276 Woodruff May 25, 19.26 1,599,998

Heck Sept;14, 1926 

